Great news that Google has started this library. This will help MD implementors like me.
"That said, the large, diverse number of implementations available are often quite liberal with their interpretation of the spec (not their fault!) and their opinions don’t always reflect what the Material Design team would consider ‘correct’."
Nevertheless I found a number of deviations from the design specs:
- Disabled buttons should not have a z level
- FAB ripples should originate from the center
- Icon buttons should have a touch area of at least 40px
- The same goes for slider knobs (at least 30px, already small)
- The scrollable tabs on the site are scrolled just a couple of pixels per arrow click, instead of scrolled per tab
- Scroll areas should have -webkit-overflow-scrolling: touch, the current site is not scrollable on Mobile Safari